Musocity,
Let's talk about this "hiding" method.
First, you move everything out of the RT folder, except for ag5077.wav.
Then in BiaB, you generate a solo track, freeze it.
Then, you turn on Audio Edit Window in BiaB, you will see many parts of the audio are empty gaps.
You select these gaps, use Alt+F8, to regen a few times, until you can see the wavform.
You do this to fill all the empty gaps in the audio. Then save the sgu.
Load it to Reaper, and do your cueing.
This will be much more efficient, than your previous method.
Try it, and let me know how it goes.